section{
    display: flex;
}
.imgbox{
    position: relative;
    overflow: hidden;
}
.imgbox img{
    width: 100%;
}
.imgbox:nth-of-type(1){
    width: 400px;
    height: 200px;
    background: #000;
}
.imgbox:nth-of-type(2){
    width: 400px;
    height: 400px;
}
.imgbox::before{
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    background: url(../image/6.png) no-repeat;
    width: 60px;
    height: 54px;
    /* background: #000; */
}
.imgbox::after{
    content: "";
    position: absolute;
    bottom: 0;
    right: 0;
    background: url(../image/7.png) no-repeat;
    width: 60px;
    height: 54px;
}